diff --git a/src/languages/en.js b/src/languages/en.js
index aa6737dd8dd..f05ce87c1dc 100644
--- a/src/languages/en.js
+++ b/src/languages/en.js
@@ -3,6 +3,7 @@ export default {
     checkEverySecond: "Check every {0} seconds",
     retryCheckEverySecond: "Retry every {0} seconds",
     retriesDescription: "Maximum retries before the service is marked as down and a notification is sent",
+    minimumIntervalWarning: "Warning: Intervals below 20 seconds may result in poor performance.",
     ignoreTLSError: "Ignore TLS/SSL error for HTTPS websites",
     upsideDownModeDescription: "Flip the status upside down. If the service is reachable, it is DOWN.",
     maxRedirectDescription: "Maximum number of redirects to follow. Set to 0 to disable redirects.",
diff --git a/src/pages/EditMonitor.vue b/src/pages/EditMonitor.vue
index 1cb3684be8e..204043fdfb6 100644
--- a/src/pages/EditMonitor.vue
+++ b/src/pages/EditMonitor.vue
@@ -160,7 +160,10 @@
                             <!-- Interval -->
                             <div class="my-3">
                                 <label for="interval" class="form-label">{{ $t("Heartbeat Interval") }} ({{ $t("checkEverySecond", [ monitor.interval ]) }})</label>
-                                <input id="interval" v-model="monitor.interval" type="number" class="form-control" required min="20" step="1">
+                                <input id="interval" v-model="monitor.interval" type="number" class="form-control" required min="1" step="1">
+                                <div class="form-text" v-if="monitor.interval < 20">
+                                    {{ $t("minimumIntervalWarning") }}
+                                </div>
                             </div>
 
                             <div class="my-3">
@@ -176,7 +179,10 @@
                                     {{ $t("Heartbeat Retry Interval") }}
                                     <span>({{ $t("retryCheckEverySecond", [ monitor.retryInterval ]) }})</span>
                                 </label>
-                                <input id="retry-interval" v-model="monitor.retryInterval" type="number" class="form-control" required min="20" step="1">
+                                <input id="retry-interval" v-model="monitor.retryInterval" type="number" class="form-control" required min="1" step="1">
+                                <div class="form-text" v-if="monitor.retryInterval < 20">
+                                    {{ $t("minimumIntervalWarning") }}
+                                </div>
                             </div>
 
                             <h2 v-if="monitor.type !== 'push'" class="mt-5 mb-2">{{ $t("Advanced") }}</h2>